Tape drawing device



June 23, 1936. A D, E EN 2,045,539

TAPE DRAWING DEVICE Filed May 28, 1935 2 Sheets-Sheet l 4 FROJfCfO PTIC/(1? j JCREEN d3 I J 46 :zii 1 INVENTOR Z4 fluausrfl f rzf/v ATTORNEYJune 23, 1936.

A. D. EITZEN TAPE DRAWING DEVICE Filed May 28, 1935 2 Sheets-Sheet 2Mme/e012 T41 5 PUL LEE INVENTOR ZEA/ BY 2 I ATTORNEY p55 wThe fingel"tenths seems Patented June 23, 1936 umr zo STATES PATENT OFFICE signorto News Projection Corporation,

New

York, N. Y., a corporation of New York Application May 28, 1935, SerialNo. 23,819

1: Claim. (Cl. 271-23) Among the objects of the present invention, it

is aimed to provide an improved tape drawing device for a telegraphicprinter especially when associated with a support usable as aninspection area for a projector or a scanning area for a scanning deviceof a television apparatus or the like.

It is another object of the present invention to provide an improvedtape drawing device for a telegraphic printer having a tape puller and acontinuously operating electric motor operag tively associated normallyto rotate said tape puller and yet responsive to the increased tensionin the tape resulting when the tape puller continues to operate afterthe printer comes to rest in turn to actuate a restraining member toiockthe tape puller against further movement.

These and other features, capabilities and advantages of the inventionwill appear from the subjoined detail description of specificembodiments thereof illustrated in the accompanying 30 drawings in whichFigure 1 is a diagrammatic view of the several essential partsconstituting the present invention showing the ticker and projector infront elevation and the tape puller in plan; 4

Fig. 2 is a diagrammatic view showing the several parts of the inventionwith thetape puller as well as the tickerand fi'ojector in sideelevation and as a result the path followed by the tape from theprojector tovthe tape puller.

, Fig. 3 is a front elevation oi the controller I the tape pullerseparated from the, motor ,and

i driving. connection; and w Fig. Us a front elevation of an showinganother embodiment of the presentinvention. n w

A oiwhichbrakeband is, connected to the upward 45 45 Inthe embodimentshown in Figs 1,2, and 3, :the tape i passes from the ticker 2 under,the

finger 3 and then over the idler -tat theentrance A end ofthesupportconstitutlng ,theiight aperture:

iofthe projector t andthen across the icilq :6 at

0 the discharge end of; the support and iromthere I H v 9r 1 down to thetapepullihg roller 1 rotatabiymounton v sticker comes to; rest and thecontinued movement red on-thesheft: tjoucmaled in thecasing th h romthenroller fl, the :tape-i/then passes onto asuitahie ,l I v A cartridgeto tumors the mercury'fiuiol toiinte rupt the electrical connectionbetween- .theter- 55 hrewind reel; $53.2 3;; 1

nected to the upper end of the link ll pivotally connected at its lowerend to the bracket l2 pivotally connected at l3 to the support I30.

On the bracket i2, there is mounted the cartridge l4 constitutingthecontainer for a supply 5 of fluid mercury constituting in turn theconductor or electrical connection between the terminals l5 and it ofthe mercury switch formed thereby when the cartridge M is substantiallyhorizontal as shown. c,

The terminal ii in the present instance is connected by the conductor I!to the outlet plug l8 connected to a suitable source of electriccurrent, which plug it is in turn connected by the conductor it to oneterminal of the winding of the elec- 5 tromagnet 20, the other terminalof which winding in turn is connected by the conductor M to the otherterminal it of the mercury switch.

Reciprocably mounted in the coil or the electromagnet 20, there isprovided the plunger or core 820 composed of soft iron or the like, theupper end of which is pivotally connected to the lever 22.

The electromagnet 20 in the present instance is preferably mounted uponthe horizontal extension 23 of the bracket 24, the opposite faces ofwhich are preferably engaged by cushioning members, such as the springs25 and 26, the spring 25 being interposed between the upper face of theextension is and'the abutment 21 andthe spring 26 being interposedbetween the lower face of the extension 23 and the base forming face 28.

The bracket M has two upwardly extending arms 29 and t0, the upper endof the arm 30 forming a journal for the shaft 8, and the upper end ofthe arm 29 forming a Journal for the pivot pin 3i pivotally connectingthe lever '22.to such arm 29. The lever 22 has an extension 32, theouter end of which is connected by the spring. 33

to the abutment 34 extending i'rom theside of the armfls. l 1 l l The:upper extension 35 of the lever '22 adjacent its pivot-connection atthe pi 13 i is connected to one end of the brake band 36, the other endextension 37 of the arm 29. The brake band ,38 I

constitutes arestraining member in the present -instance to cooperatewithanother .i'estralning -:me r o 1 a est t me of th tape puller, towit the tape pulling roller lwhenjthe tape itto raiseethelink. l i andth jlieby rockthe minals II and I8 and thereby interrupt the electricalcircuit of the electromagnet 20.

The second restraining member in the present instance is the brake drum38 integral with the tape pulling roller 1. When the electromagnetcircuit is thus interrupted, the core 2i is released whereupon thespring 33 acts on the extension 32 in turn to clamp the brake band 88.into locking engagement with the brake drum 38 and thereby anchor thetape pulling roller 1 against further movement with the shaft 8.

The shaft 8 in the present instance has fixed thereto the worm wheel 39in mesh with the worm 40 fixed on the shaft 4i journaled in the casing Iand having fixed on its outer end the sheave 42 connected to the sheave43 on the motor shaft 44 of the motor 45 by the belt 46.

For normally connecting the pulling roller 1 in driving relation withthe shaft 8, there is provided a slippage device, the disc 41 beingpinned to the shaft 8 and having its face 48 constituting a clutch facemaintained in engagement with the opposing face 49 of the drum 38. Theroller 1 and drum 38 are yieldably maintained in engagement with thedisc 41 by the pressure collar 58 1 splined to the shaft 8 to sliderelative to, but rotatewith, the shaft 8, the-pressure collar 58 beingurged into engagement with the roller 1 in turn to urge the drum 88 intoengagement with the disc 41 by the spring 5i tensed betweenthe abutment52 and the pressure collar 50, the abutment 52 being preferably screwthreadedly connected to the outer end of the shaft 8 to facilitateadjustment.

The tape I is preferably maintained in fric-' tional driving engagementwith the tape pulling roller 1 by the pressure roller 58 mounted at theend of the lever 54 journaled in the support 55. The end of the lever 54is preferably connected by a spring 56 or the like to yieldably pressthe rollerl 53 into frictional engagement with the tape In theembodiment shown in Fig. 4, the tape here designated forms a twist.between the ticker 58 andv the finger 59 of the electric switchdistinguished from the embodiment shown in Fig. 1. In this embodiment,the finger I8 is mounted at the end of a lever 60 pivotally mounted inthe switch box 8| to control a mercury switch similar to the mercuryswitch shown in Fig. 1 in turn to control the electric circuit of theelectromagnet 82.

Here too, as distinguished from the embodiment shown in Fig. 1, the tape51 after leaving the projector passes in a counterclockwise directionunder the tape pulling roller 88- as distinguished from the embodimentshown in Pig. 1. From the tape puller 83, the tape 81 passes up to therewind reel 84 journaled at the upper end of the bracket 85 extendingfrom the housing 88.

.The shaft of the rewind reel 84 has secured there'- to a sheave 81 toreceive the belt 88, preferably a spring belt, which is connected to asheave mounted on the shaft 88 journaled in the housing 88.

flected onto the rear face' of the translucent screen ll. It is obviousthat various changes and modifications may be made to the details ofconstruction without departing from the general spirit of the inventionas set forth in the appended claims.

I claim:

1, The combination with an intermittently operated tape feed, of asupport, a tape puller 5 for drawing the tape across said support as itis fed thereto, a continuously operating electric motor independent ofsaid tape feed, a driving member operatively connected to said motor, adriven member operatively connected to said tape puller, 10 said drivingand driven members being operatively associated normally to drive withone another, a restraining means, a device engaging the tape andresponsive to rock with varying tension in the tape, an electric circuitincluding an elec- 15 tromagnet and electric contacts, said electriccontacts being movably associated with said device to close saidelectric circuit and energize said electromagnet, said electromagnetbeing operatively associated to control said restraining 0 means, saiddevice being actuated by the tension in the tape resulting'when the feedto said support is arrested and the tape puller continues its pull onthe tape in turn to effect the movement of said contacts to open saidelectric circuit to 25 deenergize said electromagnet thereby to actuatesaid restraining means in turn to anchor said driven member againstmovement with said driving member.

2. The combination with an intermittently operated tape feed, of asupport, a tape puller for pulling the tape across said support as it isfed thereto, a continuously operating electric motor independent of saidtape feed, a driving member operatively connected to said motor, adrivenmember operatively connected to said tape puller, said driving anddriven members being operatively associated normally to drive with oneanother, a restraining means operable to. anchor and lock said drivenmember against rotation, a movably mounted bracket, an-electric switchincluding an element operatively associated with said bracket, saidbracket being operatively connected to engage the tape and responsive tovarying tension in the tape to be rocked thereby in turn to open orclose said switch, and an electric circuit including an electromagnetand said switch, said electromagnet being operativelyassociated tocontrol said restraining means in turn to anchor said driven memberagainst movement with said driving member when the feed to said supportis arrested and the tape puller continues its pull on the tape in turnto rock said bracket.

3. A tape pulling mechanism for converting an intermittent tape feed toa continuous tape feed and operable to come to rest when the supply oftape thereto is interrupted comprising an intermittently operated tapefeed, a support, a. tape puller for continuously drawing the tape acrosssaid support as it is delivered by said tape feed, a continuouslyoperating electric motor independent of said tape feed, a driving memberoperatively connected to said motor, a driven member operativelyconnected to said tape puller. said driving and driven members beingoperatively associated. normally to drive with one another, arestraining member operable to anchor and lock said driven memberagainst rotation when-the tape feed stops and the tape puller continuesto operate to increase the tension in the tape between said tape feedand said tape puller, and a control mechanism for controlling saidrestraining member including a movably mounted bracket operativelyconnected V to engage the tape and responsive to rock with varyingtension in the tape, an electric circuit including an electromagnet anda switch operatively connected to said bracket, and a spring opposingsaid electromagnet to actuate said restraining member either to anchoror release said driven member, said electromagnet being energized whensaid switch is closed by the movement imparted to said bracket by thetape.

4. A tape pulling" mechanism for converting an intermittent tape 'feedto a continuous tape feed and operable to come to rest when the supplyof tape thereto isinterrupted comprising an intennittently operated tapefeed, a support, a tape puller for continuously drawing the tape acrosssaid support as it is delivered by said tape feed, a continuouslyoperating electric motor independent of said tape feed, a driving memberoperatively connected to said motor, a driven member operativelyconnected to said tape puller, said driving and driven members beingoperatively associated normally to drive with one another, a restrainingmember operable to, anchor and lock said driven member against rotationwhen the tape feed stops and the tape puller continues to operate toincrease the tension in the tape between said tape feed and said tapepuller, a movably mounted bracket operatively connected to engage thetape and responsive to varying tension in the tape, and a control in?cluding an electromagnet and a spring opposing one another andoperatively connected to actuate said restraining member to anchor orrelease said driven memberand an electric circuit for said electromagnetincluding a switch controlled by said bracket in turn to control theoperation of said electromagnet.

5. A tape pulling mechanism for convertingan intermittent tape feed to acontinuous tape feed and operable to come to rest when the supply oftape thereto is interrupted comprising an intermittentlyoperated tapefeed, a support, a tape puller for continuously drawing the tape acrosssaid support as it is delivered by said tape feed, a continuouslyoperating electric motor, a driving member operatively connected to saidmotor, a. driven member operatively connected to said tape puller, saiddriving and driven members being operatively associated normally todrive with one another, a brake operable to anchor and lock said drivenmember against rotation when the tape feed stops and the tape pullercontinues to operate to increase the tension in the tape between saidtape feed. and said tape puller, a pivotally mounted bracket operativelyconnected to engage the tape and movable with the tape, and a controlincluding an electromagnet and a spring opposing one another andoperatively connected to actuate said brake to anchor or release saiddriven member and an electric circuit for said electromagnet including aswitch controlled by said bracket in turn to control the operation ofsaid electromagnet.

6. A tape pulling mechanism for converting an intermittent tape feed toa continuous tape feed and operable tocome to vrest when the supply oftape thereto is interrupted comprising an intermittently operated tapefeed, a support, a tapepuller for continuously drawing the tape acrosssaid support as it is delivered by said tape feed, a continuouslyoperating electric motor independent of said tape feed, a driving memberoperatively connected to said motor, a driven member operativelyconnected tosaid tape pulle said driving and driven members beingoperatively associated normally to drive with one another, a restrainingmember operable to anchor and lock said driven member against rotationwhen the tape feed stops and the tape puller continues to operate toincrease the tension in the tape between said tape feed and said tapepuller, a bracket operatively connected to engage the tape and movablewith the tape, and a control including an electromagnet and a springopposing one another operatively connected to actuate saidrestrainingmember to anchor or release said driven member and anelectric circuit for said eelctromagnet including a switch operativelyconnected to said bracket, said switch being opened when said bracket isrocked by the tension resulting when the tape feed stops in turn todeenergize said electromagnet toenable said spring to actuate saidrestraining member to anchor said driven member and thereby said tapepuller against further movement until the tension in the tape is againrelieved with the operation of the tape feed.

'7. A tape pulling mechanism for converting an intermittent tape feed toa continuous tape feed and operable to come to rest when the supply oftape thereto is interrupted comprising an intermittently operated tapefeed, a support, a tape puller for continuously drawing the tape acrosssaid support as it is delivered by said tape feed, a continuouslyoperating electricmotor, a driving member operatively connected to saidmotor, a driven member operatively connected to said tape puller, saiddriving and driven members being operatively associated normally todrive with one another, a. brake operable to anchor. and lock saiddriven member against rotation when the tape feed stops and the tapepuller continues to operate to increase the tension in the tape betweensaid tape feed and said tape puller, a pivotally mounted bracketoperatively connected to engage the tape and movable with the tape, and

a control including an electromagnet and a spring opposing one anotheroperatively connected to actuate said brake to anchor or release saiddriven member and an electric circuit for said electromagnet including aswitchoperatively connected to said bracket, said switch being openedwhen said bracket is rocked by the tension resulting when the tape feedstops in turn to deenergize said electromagnet to err-- able said springto actuate said brake to anchor said driven member and thereby said tapepuller against further movement until the tension in the tape is againrelieved with the operation of 'supply of tape thereto is interruptedcomprising an intermittently operated tape feed, a support, a tapepuller. for continuously pulling the tape across the support as it isdelivered by said tape feed, a continuously operating electric motor, adriving member operatively connected to said motor and operativelyassociated normally to drive said tape puller, a brake operable toanchor and lock said tape puller against rotation when the tape teedstops and the tape puller continues to operate to increase the tensionin the tape between said tape feed and said tape puller, a pivotallymounted bracket operatively connected to engage the tape and movable tobe rocked by the tape, and a control including Q brake to anchor orrelease said tape puller and an electric circuit for said electromagnetincluding a switch controlled by said bracket in turn to control theoperation of said electromagnet.

9. A tape pulling mechanism for converting an intermittent tape feed toa continuous tape feed and operable to come to rest when the supply of.tape thereto is interrupted comprising an intermittently operated tapefeed, a support, a tape puller for continuously pulling the tape acrossthe support as it is discharged by the tape feed, and means forarresting the tape puller when the tape feed comes to rest including abrake drum associated with said tape puller, a brake band operativelyassociated to anchor said brake drum and thereby said tape pulleragainst rotation, a pivotally mounted bracket operatively connected toengage the tape and movable to be rocked by the tape, and a controlincluding an electromagnet operatively connected to actuate said brakeband to anchor or release said brake drum and an electric circuit forsaid electromagnet including a switch controlled by said bracket in turnto control the operation 01' said electromagnet. i

10. A tape pulling mechanism for converting an intermittent tape feed toa continuous tape feed and operable to come to rest when the supply oftape thereto is interrupted comprising an intermittently operated tapefeed, a support, a tape puller for continuously pulling the tape acrossthe support as it is discharged by the tape feed, means for arrestingthe tape puller when the tape feed comes to rest including a brake drumassociated with said tape puller, a brake band operatively associated toanchor said brake drum and thereby said tape puller against rotation, apivotally mounted bracket operatively connected to engage the tape andmovable to be rocked by the-tape, and a control including anelectromagnet and a spring opposing one another operatively to actuatesaid brake band to anchor or release said brake drum, an electriccircuit for said electromagnet including a mercury switch operativelyconnected to said bracket, said' switch being opened when said bracketis rocked by the tension resulting when the tape feed stops in turn todeenergize said electromagnet to enable said spring to actuate saidbrake band to anchor said brake drum and 5 thereby said tape pulleragainst further movement until the tension in the tape is again relievedwith the operation of the tape feed.

11. A tape pulling mechanism operable to come to rest when the supply oitape thereto 10 is interrupted comprising a tape puller, operatedindependent of the tape supply, restraining members one of whichrestraining members is operatively connected to rotate with said tapepuller,

a movably mounted bracket in engagement with 15 the tape, an electriccircuit including an electromagnet and an electric switch operativelyassociated with said bracket, said electro-magnet being operativelyassociated to the other of said restraining members when energized toactuate 20 said other restraining member to free said rotatablerestraining member for rotation, said bracket when rocked by the tensionin the tape resulting when the supply of tape to said tape puller isinterrupted to actuate said electric 25 switch in turn to deenergizesaid eleotro-magnet.

12. A tape pulling mechanism operable to come to rest when the supply oftape thereto is interrupted comprising a tape puller, a rotatablerestraining'member operatively connected to rotate 30 with said tapepuller, a second restraining member, a pivotally mounted bracket inengagement with the tape and normally deflecting the tape, an electriccircuit including an electro-magnet and an electric switch operativelyassociated 5 with said bracket, said electro-magnet being opv erativelyassociated to said' second restraining member when energized to actuatesaid second restraining member to free said rotatable restraining memberfor rotation, said bracket when 40 rocked by the tension of the taperesulting when the supply of tape to said tape puller is interrupted toactuate said electric switch in turn to deenergize said electro-magnet.

I AUGUST D. EI'I'ZEN. 45

